443
FZUS51 KLWX 182057
CWFLWX

Coastal Waters Forecast
National Weather Service Baltimore MD/Washington DC
357 PM EST Tue Nov 18 2025

Tidal Potomac River and Maryland portion of Chesapeake Bay.

Forecasts of wave heights do not include effects of wind direction
relative to tidal currents. Expect higher waves when winds are
blowing against the tidal flow.  Waves flat where waters are iced over.

ANZ500-190900-
357 PM EST Tue Nov 18 2025

.SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY...

A wave of low pressure approaching from the Ohio River Valley will
track along a stalled front over or just south of the Mid-Atlantic
through Wednesday. The front will remain stalled just to the south
through Thursday. Another area of low pressure may take a similar
path Friday into Saturday. Small Craft Advisories may be needed
Wednesday afternoon, and Friday night into Saturday.

$$

ANZ535-190900-
Tidal Potomac from Key Bridge to Indian Head-
357 PM EST Tue Nov 18 2025

.REST OF THIS AFTERNOON...S winds 5 kt. Waves less than 1 ft. A
chance of rain.
.TONIGHT...SE winds around 5 kt. Waves 1 ft. Rain. Patchy fog. Vsby
1 to 3 NM.
.WED...N winds around 5 kt. Waves 1 ft.
.WED NIGHT...N winds around 5 kt. Waves 1 ft.
.THU...E winds around 5 kt. Waves 1 ft or less.
.THU NIGHT...SE winds around 5 kt. Waves 1 ft.
.FRI...SW winds around 5 kt. Waves 1 ft. A chance of rain in the
evening. Rain likely after midnight.
.SAT...NE winds around 5 kt. Waves 1 ft. A chance of rain.

$$

ANZ536-190900-
Tidal Potomac from Indian Head to Cobb Island-
357 PM EST Tue Nov 18 2025

.REST OF THIS AFTERNOON...S winds 5 kt. Waves less than 1 ft. A
slight chance of rain.
.TONIGHT...SE winds 5 to 10 kt. Waves 1 ft. Rain. Vsby 1 to 3 NM.
.WED...W winds 5 kt...becoming N in the afternoon. Waves 1 ft.
.WED NIGHT...N winds around 5 kt. Waves 1 ft.
.THU...E winds around 5 kt. Waves 1 ft or less.
.THU NIGHT...SE winds around 5 kt. Waves 1 ft.
.FRI...SW winds around 5 kt...becoming N after midnight. Waves 1 ft.
A chance of rain in the evening. Rain likely after midnight.
.SAT...NE winds 5 to 10 kt. Waves 1 ft. A chance of rain.

$$

ANZ537-190900-
Tidal Potomac from Cobb Island to Smith Point-
357 PM EST Tue Nov 18 2025

.REST OF THIS AFTERNOON...S winds 5 kt. Waves flat. A slight chance
of rain.
.TONIGHT...S winds 5 to 10 kt. Gusts up to 20 kt in the late evening
and overnight. Waves 1 ft. Rain likely. Vsby 1 to 3 NM.
.WED...W winds 5 to 10 kt...becoming N in the afternoon. Gusts up to
20 kt. Waves 1 to 2 ft.
.WED NIGHT...N winds 5 to 10 kt with gusts to 20 kt. Waves 1 to
2 ft.
.THU...NE winds around 5 kt. Waves 1 ft.
.THU NIGHT...SE winds around 5 kt. Waves flat.
.FRI...SW winds 5 kt...becoming N after midnight. Waves 1 ft or
less. A chance of rain in the evening. Rain likely after midnight.
.SAT...NE winds 5 to 10 kt. Waves 1 ft. A chance of rain.

$$

ANZ530-190900-
Chesapeake Bay north of Pooles Island-
357 PM EST Tue Nov 18 2025

.REST OF THIS AFTERNOON...SW winds 5 kt. Waves less than 1 ft. A
slight chance of rain.
.TONIGHT...S winds 5 kt. Waves less than 1 ft. Rain. Patchy fog.
Vsby 1 to 3 NM.
.WED...NE winds 5 kt. Waves less than 1 ft. A chance of rain. Patchy
fog. Vsby 1 to 3 NM.
.WED NIGHT...N winds around 5 kt. Waves 1 ft.
.THU...E winds around 5 kt. Waves 1 ft.
.THU NIGHT...SE winds around 5 kt. Waves flat.
.FRI...SW winds 5 to 10 kt...becoming NW after midnight. Waves 1 ft.
A chance of rain through the night.
.SAT...N winds 5 to 10 kt. Waves 1 ft. A chance of rain.

$$

ANZ531-190900-
Chesapeake Bay from Pooles Island to Sandy Point-
357 PM EST Tue Nov 18 2025

.REST OF THIS AFTERNOON...SW winds 5 kt. Waves less than 1 ft. A
chance of rain.
.TONIGHT...S winds 5 to 10 kt. Waves 1 ft. Rain. Patchy fog. Vsby
1 to 3 NM.
.WED...NE winds 5 to 10 kt. Waves 1 ft. A chance of rain. Patchy
fog. Vsby 1 to 3 NM.
.WED NIGHT...N winds 5 to 10 kt. Waves 1 ft.
.THU...E winds around 5 kt. Waves flat.
.THU NIGHT...SE winds around 5 kt. Waves flat.
.FRI...SW winds 5 to 10 kt...becoming N after midnight. Waves 1 ft.
A chance of rain in the evening. Rain likely after midnight.
.SAT...N winds 5 to 10 kt. Waves 1 ft. A chance of rain.

$$

ANZ538-190900-
Patapsco River including Baltimore Harbor-
357 PM EST Tue Nov 18 2025

.REST OF THIS AFTERNOON...SW winds 5 kt. Waves flat. A chance of
rain.
.TONIGHT...S winds 5 kt. Waves less than 1 ft. Rain. Patchy fog.
Vsby 1 to 3 NM.
.WED...NE winds 5 to 10 kt. Waves 1 ft. A chance of rain. Patchy
fog. Vsby 1 to 3 NM.
.WED NIGHT...N winds around 5 kt. Waves 1 ft or less.
.THU...E winds around 5 kt. Waves flat.
.THU NIGHT...S winds around 5 kt. Waves flat.
.FRI...W winds around 5 kt. Waves 1 ft or less. A chance of rain in
the evening. Rain likely after midnight.
.SAT...N winds around 5 kt. Waves 1 ft or less. A chance of rain.

$$

ANZ539-190900-
Chester River to Queenstown MD-
357 PM EST Tue Nov 18 2025

.REST OF THIS AFTERNOON...SW winds 5 kt. Waves less than 1 ft. A
chance of rain.
.TONIGHT...S winds 5 to 10 kt. Waves 1 ft. Rain. Patchy fog. Vsby
1 to 3 NM.
.WED...NE winds 5 kt...becoming N in the afternoon. Waves 1 ft. A
chance of rain. Patchy fog. Vsby 1 to 3 NM.
.WED NIGHT...N winds 5 to 10 kt. Waves 1 ft.
.THU...E winds around 5 kt. Waves flat.
.THU NIGHT...SE winds around 5 kt. Waves flat.
.FRI...SW winds 5 kt...becoming N after midnight. Waves 1 ft or
less. A chance of rain in the evening. Rain likely after midnight.
.SAT...N winds 5 to 10 kt. Waves 1 ft. A chance of rain.

$$

ANZ532-190900-
Chesapeake Bay from Sandy Point to North Beach-
357 PM EST Tue Nov 18 2025

.REST OF THIS AFTERNOON...S winds 5 kt. Waves less than 1 ft. A
chance of rain.
.TONIGHT...S winds 5 to 10 kt. Waves 1 to 2 ft. Rain. Patchy fog.
Vsby 1 to 3 NM.
.WED...S winds 5 to 10 kt...becoming N in the late morning and
afternoon. Waves 1 to 2 ft. A chance of rain. Vsby 1 to 3 NM.
.WED NIGHT...N winds 5 to 10 kt. Waves 1 to 2 ft.
.THU...E winds around 5 kt. Waves 1 ft or less.
.THU NIGHT...S winds around 5 kt. Waves 1 ft or less.
.FRI...SW winds 5 to 10 kt...becoming N after midnight. Waves 1 ft.
A chance of rain in the evening. Rain likely after midnight.
.SAT...N winds 5 to 10 kt. Waves 1 ft. A chance of rain.

$$

ANZ540-190900-
Eastern Bay-
357 PM EST Tue Nov 18 2025

.REST OF THIS AFTERNOON...SW winds 5 kt. Waves less than 1 ft. A
chance of rain.
.TONIGHT...S winds 5 to 10 kt. Waves 1 ft. Rain. Patchy fog. Vsby
1 to 3 NM.
.WED...S winds 5 kt...becoming N in the late morning and afternoon.
Waves 1 ft. A chance of rain. Vsby 1 to 3 NM.
.WED NIGHT...NE winds 5 to 10 kt. Waves 1 ft.
.THU...E winds around 5 kt. Waves flat.
.THU NIGHT...SE winds around 5 kt. Waves flat.
.FRI...SW winds around 5 kt...becoming N after midnight. Waves 1 ft
or less. A chance of rain in the evening. Rain likely after
midnight.
.SAT...N winds 5 to 10 kt. Waves 1 ft. A chance of rain.

$$

ANZ533-190900-
Chesapeake Bay from North Beach to Drum Point-
357 PM EST Tue Nov 18 2025

.REST OF THIS AFTERNOON...S winds 5 kt. Waves less than 1 ft. A
slight chance of rain.
.TONIGHT...S winds 5 to 10 kt. Waves 1 to 2 ft. Rain. Vsby 1 to
3 NM.
.WED...SW winds 5 to 10 kt...becoming NW 10 to 15 kt in the late
morning and early afternoon, then becoming N late. Gusts up to
20 kt. Waves 1 to 2 ft.
.WED NIGHT...N winds 10 to 15 kt with gusts to 20 kt. Waves 1 to
2 ft.
.THU...NE winds around 5 kt. Waves 1 ft or less.
.THU NIGHT...SE winds around 5 kt. Waves 1 ft or less.
.FRI...SW winds 5 to 10 kt...becoming NW after midnight. Waves 1 ft.
A chance of rain in the evening. Rain likely after midnight.
.SAT...N winds 5 to 10 kt. Waves 1 ft. A chance of rain.

$$

ANZ541-190900-
Choptank River to Cambridge MD and the Little Choptank River-
357 PM EST Tue Nov 18 2025

.REST OF THIS AFTERNOON...SW winds 5 kt. Waves less than 1 ft. A
slight chance of rain.
.TONIGHT...SE winds 5 to 10 kt. Waves 1 ft. Rain. Vsby 1 to 3 NM.
.WED...S winds 5 to 10 kt...becoming N in the late morning and
afternoon. Gusts up to 20 kt. Waves 1 ft. A chance of rain.
.WED NIGHT...NE winds 5 to 10 kt with gusts to 20 kt. Waves 1 ft.
.THU...NE winds around 5 kt. Waves 1 ft or less.
.THU NIGHT...SE winds around 5 kt. Waves flat.
.FRI...SW winds 5 to 10 kt...becoming NW after midnight. Waves 1 ft.
A chance of rain in the evening. Rain likely after midnight.
.SAT...NE winds 5 to 10 kt. Waves 1 ft. A chance of rain.

$$

ANZ542-190900-
Patuxent River to Broomes Island MD-
357 PM EST Tue Nov 18 2025

.REST OF THIS AFTERNOON...S winds 5 kt. Waves less than 1 ft. A
slight chance of rain.
.TONIGHT...SE winds 5 to 10 kt. Waves 1 ft. Rain. Vsby 1 to 3 NM.
.WED...SW winds 5 kt...becoming NW in the late morning and
afternoon. Waves 1 ft.
.WED NIGHT...N winds 5 to 10 kt. Waves 1 ft.
.THU...NE winds around 5 kt. Waves 1 ft.
.THU NIGHT...SE winds around 5 kt. Waves 1 ft.
.FRI...SW winds around 5 kt...becoming N after midnight. Waves 1 ft.
A chance of rain in the evening. Rain likely after midnight.
.SAT...N winds 5 to 10 kt. Waves 1 ft. A chance of rain.

$$

ANZ534-190900-
Chesapeake Bay from Drum Point to Smith Point-
357 PM EST Tue Nov 18 2025

.REST OF THIS AFTERNOON...S winds 5 kt. Waves less than 1 ft. A
slight chance of rain.
.TONIGHT...S winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
Rain. Vsby 1 to 3 NM.
.WED...W winds 10 kt...becoming N in the afternoon. Gusts up to
20 kt. Waves 2 ft. A chance of rain.
.WED NIGHT...N winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft.
.THU...NE winds 5 to 10 kt. Waves 1 ft.
.THU NIGHT...SE winds around 5 kt. Waves 1 ft or less.
.FRI...SW winds 5 to 10 kt...becoming N after midnight. Waves 1 ft.
A chance of rain in the evening. Rain likely after midnight.
.SAT...N winds 10 kt. Waves 1 to 2 ft. A chance of rain.

$$

ANZ543-190900-
Tangier Sound and the inland waters surrounding Bloodsworth Island-
357 PM EST Tue Nov 18 2025

.REST OF THIS AFTERNOON...S winds 5 kt. Waves flat. A slight chance
of rain.
.TONIGHT...S winds 10 to 15 kt. Gusts up to 20 kt in the late
evening and overnight. Waves 1 ft. Rain. Vsby 1 to 3 NM.
.WED...SW winds 5 to 10 kt...becoming N 10 to 15 kt in the
afternoon. Gusts up to 20 kt. Waves 1 ft. A chance of rain.
.WED NIGHT...N winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft.
.THU...NE winds 5 to 10 kt. Waves 1 ft.
.THU NIGHT...SE winds around 5 kt. Waves flat.
.FRI...SW winds 5 to 10 kt...becoming NW after midnight. Waves 1 ft.
A chance of rain in the evening. Rain likely after midnight.
.SAT...N winds 5 to 10 kt. Waves 1 ft. A chance of rain.

$$